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Glass Cylinder head

I am putting an old engine back together at school. Its a Briggs & Strappon with a glass cylinder head.
It has a thick de-comp plate that lowers the compression ratio, provides a hole for the spark plug and gives a nice flat surface for the head to seal on.
Now...heres the pain in the bum bit...the company (in QLD) that made it doesn't seem to exist anymore, nor do the didtributors in Melbourne. I need to find out OR work out what the head gasket material should be and what type of glass to use...any thoughts.

I have done quite a bit of "Googling" with dead-ends all the way. It was called the "Visi trainer engine" and was made by(modified) HEXCO.

If some one has any thoughts on the materials I could use, type of glass (bullet proof??, toughened??...wood heater?!) please let me know.

This engine was used when I was a student...I thought it was pretty cool....I would like to use it again as it showed not only how the "flame" traveled across the combustion chamber but also how much it changed color with a rich or lean mixture. Its final trick is to have it dual fuel and show the differnt way petrol "burns" to lpg.
Cheers
Q-ball.

"Clay is for racing on,Tar is how you get there!!"

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I had a Southern Cross 125 cc 4-Stroke that ran superbly for years without a Head Gasket.

Here's a photo of one ... http://www.google.co...

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T

My Shed

Holdenpaedia, they're the brakes Mate.

Cool...
There seems to be a similar one at Queensland Uni http://innovexpo.ite...
See how that contact goes, if no go I am sure I can find more info. Action pics are required.

rusty

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it will be very difficult to get a bit of toughened glass that small
and might be hard to get it flat enough for a seal if your using no gasket
i have used 15mm float glass as a BBQ plate before and it didnt crack
but under some pressure i dont know
how thick can the head be and how is it fixed
maybe some 19mm float
bullet resistant glass is made from several layers of thin glass and inter layer ,
the glass on the inside will probably break
glass for ovens from memory is usually 10mm
so i would say 19mm float depending how its fixed to the block

daniel d

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Thanks Rusty...yup that the same donk and fittings I've got, though the engine could be a bit latter than mine.
I will try and shoot the uni an e-mail...my only drama maybe that that paper was done in 2000. I hope some-one is still there that knows aboout it :)

Double D.. Yeah..it will most certainly need a head gasket. The printed info I have is very light on detail and when it speaks of the head and gasket all it says is "a head gasket of special material" and a galass cylinder head made from "special glass"......great!!!..I know its special..BUT WHAT IS IT!!!.

I recon I could make the head gasket from exhast manifold gasket material..this has a soft layer on each side and metal in the middle.
I will look into 19mm float I have heaps of room to fit any thickness I need...all it will need is longer studs.
Cheers

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Q-ball.

"Clay is for racing on,Tar is how you get there!!"
[http://gallery.oldho...|My Shed]
3401

Just an idea, try finding out what type of glass they use for high pressure boiler gauge glasses and if it will take the repeated stress of compression and power strokes. If it can take 60+ Bar of pressure (static) it may be able to handle the pressure of a Briggs and strapon. Just a thought.

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Steve

[http://gallery.oldho...|My Shed]
Sloth Engineering, I'll do it... When I get around to it.

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